11. Selecting LV Power Line SPDs · Page 5 of 7
Environment, Enclosure IP and Altitude
Mechanical environment is part of selection.

Temperature & pollution
Check ambient rating, pollution degree, and whether the board is outdoors.
Vibration
Marine, mining, and heavy industry may need secure DIN retention and regular torque checks.
Corrosive atmospheres
Coastal and process plants may need stainless accessories and inspection for terminal corrosion.
